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Units of Measure

Roxanne K. Young

Units of Measure

JAMA and the Archives Journals report quantitative values in conventional units. See 18.5, Units of Measure, Conventional Units and SI Units in JAMA and the Archives Journals.

(p. 520)
Use the following abbreviations and symbols with a numerical quantity in accordance with guidelines in 18.0, Units of Measure. See especially 18.5, Units of Measure, Conventional Units and SI Units in JAMA and the Archives Journals; Table 2 in chapter 18, Selected Laboratory Tests, References Ranges with and Conversion Factors; and 8.4, Punctuation, Forward Slash (Virgule, Solidus). Exception: The following example is an acceptable format in table footnotes or figure legends:

* Expand at first mention, with the abbreviation immediately following in parentheses. Abbreviate thereafter, except at the beginning of a sentence. (See also 18.3.4, Units of Measure, Format, Style, and Punctuation, Beginning of Sentence, Title, Subtitle.)

† Use the abbreviation only in a virgule construction and in tables and line art.